Barbecue



FIG. 1 is a front top perspective view of a first version of a barbecue showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is an opposite side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The dashed lines shown in the drawings illustrate portions of the barbecue that are not claimed and thus form no part of the claimed design. 

CLAIM The ornamental design for a barbecue, as shown and described. 